I've been lucky in respect to the bands I have seen, Led Zeppelin at Knebworth in 1979, Queen at Wembley in 1986, Pink Floyd, again at Wembley and also at Earls Court for The Wall tour, AC/DC twice (once with Bon Scott and once with Brian Johnson), Motorhead about a dozen times, Hawkwind about the same, plus ZZ Top, Jimmy Page, Johnny Winter, Uriah Heap, Whitesnake, Screaming Lord Sutch, Chuck Berry and a few others that I can't bring to mind at the moment.